Radar Station on the Grand Ballon

Alsace (French: Alsace [alzas]; Alsatian: Elsàss [ˈɛlsɑs]; German: Elsass, pre-1996: Elsaß, IPA: [ˈɛlzas]; Latin: Alsatia) is the fifth-smallest of the 27 regions of France in land area (8,280 km²), and the smallest in metropolitan France. It is also the seventh-most densely populated region in France and third most densely populated region in metropolitan France, with ca. 220 inhabitants per km² (total population in 2006: 1,815,488; 1 January 2008 estimate: 1,836,000). Alsace is located on France's eastern border and on the west bank of the upper Rhine adjacent to Germany and Switzerland. The political, economic and cultural capital as well as largest city of Alsace is Strasbourg. Because that city is the seat of dozens of international organizations and bodies, Alsace is politically one of the most important regions in the European Union.

The name "Alsace" can be traced back to the Old High German Ali-saz or Elisaz, meaning "foreign domain". An alternative explanation derives it from a Germanic Ell-sass, meaning "seated on the Ill", a river in Alsace. The region was historically part of the Holy Roman Empire. It was gradually annexed by France in the 17th century under kings Louis XIII and Louis XIV and made one of the provinces of France. Alsace is frequently mentioned in conjunction with Lorraine, because German possession of parts of these two régions (as the imperial province Alsace-Lorraine, 1871–1918) was contested in the 19th and 20th centuries, during which Alsace changed hands four times between France and Germany in 75 years.

For the department of France of the same name, see Vosges.

The Vosges (French pronunciation: [voːʒ]) (German: Vogesen, German pronunciation: [foˈgeːzn̩]) are a range of low mountains in eastern France, near its border with western Germany. They extend along the west side of the Rhine valley in a northnortheast direction, mainly from Belfort to Saverne. The Grand Ballon is the highest peak at 1424m.